An overlay for an electronic circuit used as a diagnostic apparatus and a method of conducting the diagnosis using the overlay. A plurality of temperature sensitive areas which are made from encapsulated liquid crystal zones are positioned on the overlay in accordance with the spatial configuration of the electronic components with which the overlay is to be used. Each of the temperature sensitive areas is aligned with a respective component on the electronic circuit and each of the liquid crystal zones has a first color identical to the color of the rest of the crystals when the respective electronic components are within a predetermined temperature range. When the temperature of a component changes by a certain quantity, the color of the crystal zone also changes, which change is visually observed.
Heat dissipating LCD display where heat dissipating materials, including an aluminum plate and a mica sheet are interspersed between an LCD screen display and a screen mounted LCD power supply to eliminate localized LCD screen heating, and to increase LCD screen display performance by application of dissipated heat to a large area of the LCD screen display.
In a laptop computer, CPU-generated heat is thermally conducted passively to a radiator-like element disposed behind the LCD, which uses the heat to warm the LCD. The CPU is surrounded by a liquid-tight housing containing a biphase coolant. A first tube in fluid communication with an outlet port in the housing conveys heat-vaporized coolant to an input port on the radiator. The coolant flows through a plurality of columns formed in the radiator-like element, transferring heat and condensing in the process. The transferred heat is radiated to the LCD, which is desirably warmed in the process. The condensed coolant is conducted from an export port in the radiator-like element through a second tube to an input port in the housing. A pressure sensor may be included to provide a coolant pressure drop signal that can be used to shutdown the CPU in the event of a coolant leak.
In order to test airflow in a cabinet for electronics equipment, a board which has an array of thermochromic indicators is positioned in the cabinet, hot air is introduced into the cabinet; and a thermographic pattern in the nature of isotherms which may be formed on the board is observed.
A composition, method, and system for recording an image. The system includes an imaging material in which radiation energy is absorbed by an antenna material. The antenna material may be chosen from the group consisting of phthalocyanines and naphthalocyanines.
A radio-interrogable data storage medium having a carrier in which electric components are embedded, and a component for optically signaling a previously assumed operating state. Also, a method for operating the radio-interrogable data storage medium, including the steps of the data storage medium assuming various operating states, and optically signaling at least one previously assumed operating state.
